Murders at Karlov Manor

Conspiracy Unraveler | Creature | Sphinx Detective | Flying You may collect evidence 10 rather than pay the mana cost for spells that you cast. (To collect evidence 10, exile cards with total mana value 10 or greater from your graveyard.) | Wayne Reynolds

The Pride of Hull Clade | Legendary Creature | Crocodile Elk Turtle | This spell costs {X} less to cast, where X is the total toughness of creatures you control. Defender {2}{U}{U}: Until end of turn, target creature you control gets +1/+0, gains "Whenever this creature deals combat damage to a player, draw cards equal to its toughness," and can attack as though it didn't have defender. | Brent Hollowell

Kylox, Visionary Inventor | Legendary Creature | Viashino Artificer | Menace, ward {2}, haste Whenever Kylox, Visionary Inventor attacks, sacrifice any number of other creatures, then exile the top X cards of your library, where X is their total power. You may cast any number of instant and/or sorcery spells from among the exiled cards without paying their mana costs. | Lie Setiawan